Dart Little M Sportsman Small Block Chevy Racing Blocks
Dart’s Little M Sportsman Racing Block is designed to accept standard off the shelf stock parts. It features a standard cam location and size, and works with stock type oil pans. Unlike the Iron Eagle Blocks which require far more custom equipment, the Little M is a true racing block that utilizes standard hardware that fits standard Small Block Chevy Engines.
The Little M Sportsman differs from the Regular Little M blocks as a lower cost alternative featuring ductile (instead of steel) main caps with 4 bolts on center 3 caps, and 2 bolt on end caps. It also employs a rear external oil feed, crossover and restrictor provisions. This would be a perfect block for a street/strip performance engine without breaking the bank.
Uses standard small block parts, including cam, timing chain, oil pump, oil pan, oil filter, motor mounts, mechanical fuel pump, and clutch linkage.
Priority main oiling system feeds main bearings first.
Siamese cylinder bores with extra thick walls resist cracking and improve ring seal for more power (minimum .275” thick with 4.185” bore).
Scalloped water jacket walls improve flow around cylinders for better cooling.
Open lifter valley improves oil return to pan.
Enlarged lifter bosses accommodate offset and oversize lifters.
Blind head bolt holes don’t go through to water jacket.
Splayed outer bolts on middle main bearing caps.
Rear external oil feed, crossover and restrictor provision.
Parts kit sold separately.
NOTE: This block has a Flat Rate Fee to a Commercial / Business Location Set, if shipping to a Residential Location, Freight Costs will be higher than indicated in checkout.
Material: 220 BHN Cast Iron
Deck Height: 9.025″ (stock)
Cylinder Bores: 4.000″ or 4.125″ 4.185″ (max)
Main Bearings: 350 or 400
Main Caps: Ductile Iron 4-bolt Center 3, 2 bolt on end caps
Cam Location: Stock
Lifter Bores: Stock .842″
Freeze Plugs: Press fit
Rear Seal: 2-Piece
Weight: 197-205 lbs.
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